Clock thermostat



FIG. 1 is a left, front perspective view of a clock thermostat of my new design;

FIG. 2 is a front elevational view thereof, the rear not shown, being substantially flat, plain and unornamented;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front perspective view thereof, wherein the front cover is in the open position;

FIG. 6 is a top plan view of FIG. 5;

FIG. 7 is a right side elevational view of FIG. 5; and

FIG. 8 is a front elevational view of the cover panel only. 

The ornamental design for a clock thermostat, substantially as shown and described. 